Home / 39,970.80-59,964.71-11,890.94

Finding the Fourth Proportional to 39,970.80, 59,964.71 and 11,890.94

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Solution

The fourth proportional to 39,970.80, 59,964.71 and 11,890.94 is: 17,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.80 : 59,964.71 = 11,890.94 : x
  2. Step 2: Convert to fraction form
    39,970.80/59,964.71 = 11,890.94/x
  3. Step 3: Cross multiply
    39,970.80x = 59,964.71 × 11,890.94
  4. Step 4: Simplify right side
    39,970.80x = 713,036,409.45
  5. Step 5: Solve for x
    x = 713,036,409.45/39,970.80
  6. Step 6: Final answer
    x = 17,838.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.